Two ‘Slow Horses’ Stars Officially Reunite in an Oscar-Winning WWII Epic on Prime Video

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Kristin Scott Thomas at a fancy restaurant in Slow Horses Season 5

Published Oct 31, 2026, 5:00 AM EDT

Rohan Naahar is a News Writer for Collider. From Francois Ozon to David Fincher, he'll watch anything once.

He has covered everything from Marvel to the Oscars, and Marvel at the Oscars. He also writes obsessively about the box office, charting the many hits and misses that are released weekly, and how their commercial performance shapes public perception. In his time at Collider, he has also helped drive diversity by writing stories about the multiple Indian film industries, with a goal of introducing audiences to a whole new world of cinema.

An Oscar-winning companion piece to Christopher Nolan’s Dunkirk, coincidentally released in the same year and starring Nolan’s recurring collaborator, has been added to the Prime Video library. While Dunkirk tells the story from the front lines of World War II, the companion piece unfolds almost entirely inside dimly lit hallways and corridors of power. The movie, directed by Joe Wright, also serves as something of a companion piece to Wright’s own television series Mussolini: Son of the Century, which was released in 2025.

The film is notable for finally earning the Best Actor Oscar for Gary Oldman, who had previously been nominated in the category for Tinker Tailor Soldier Spy and was subsequently nominated for Mank. He played the late British Prime Minister Winston Churchill in the movie, which focuses on the early days of his premiership, overlapping with the early days of World War II. Also starring Lily James, Kristin Scott Thomas, and Ben Mendelsohn, the film in question was a major box-office hit in addition to being a critical darling. There was, however, some resistance against its whitewashed portrayal of Churchill.

Here's the 'Dunkirk' Companion Piece Streaming on Prime Video

We’re talking, of course, about Darkest Hour. The movie grossed $150 million worldwide against a reported budget of $30 million, and is now sitting at a “Certified Fresh” 84% score on Rotten Tomatoes. The aggregator website’s consensus reads, “Darkest Hour is held together by Gary Oldman's electrifying performance, which brings Winston Churchill to life even when the movie's narrative falters.” Oldman has devoted the last four years of his career to the hit Apple TV series Slow Horses, which recently concluded its sixth season with a perfect 100% score on Rotten Tomatoes. The show holds an overall 97% score on the aggregator website, having cemented itself as a platform-defining hit for Apple TV. You can now watch Darkest Hour on Prime Video, and stay tuned to Collider for more updates.